Dental disk-carrier



(No Model.)

M. S. NICHOLS.

DENTAL DISK CARRIER.

No. 480,121 Patented Aug. 2, 1892.

INVENTOI? A TTOHNEYS NITED STATES MATHEWV S. NICHOLS, OF CENTRALVILLAGE, CONNECTICUT.

DENTAL DISK-CARRIER.

SPECIFICATION forming part of Letters Patent No. 480,121, dated August2, 1892.

Application filed June 25, 1891. Serial No. 397,48A. (ll'o model.)

To all whom it may concern.-

Be it known that I, MATHEW S. NIcHoLs, of Central Village, in the countyof Windham and State of Connecticut, have invented a' new and usefulImprovement in Dental Disk= Carriers and their Disks, of which thefollowing is a full, clear, and exact description.

This invention mainly consists in a dental disk-carrier of novelconstruction for use in connection with a dental engine to rotate anabrading or polishing disk generally made of sand or emery paper, and itmore especially relates to that description of dental disk-carrierswhich provides for the removal and replacement of the disks withoutdismembering the carrier itself, thus making no separable parts orsections liable to be lost or misplaced.

The invention comprises a special construction of disk-carrier of thisdescription and of disk to suit, substantially as hereinafter shown anddescribed, and more particularly pointed out in the claims, whereby notonly a disk-carrier of simple and durable construction is obtained, butthe disk may be very expeditiously and conveniently attached to thecarrier and be quickly and centrally adjusted; also, be firmly held inplace when on the carrier.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 represents an exteriorlongitudinal view of my improved dentaldisk-carrier with disk secured thereon; Fig. 2, a further exteriorlongitudinal View in a plane at right angles to Fig. 1 and showing thedisk in position before it is clamped against the outer end or head ofthe carrier; Fig. 3, a mainly exterior longitudinal view similar to Fig.2, but omitting the disk and showing the head end of the carrier, whichis in part section, as adjusted to pass the disk on or off the carrier.Fig. 4 is a mainly sectional longitudinal view of the carrier in partupon the line 4: 4 in Fig. 1, looking in direction of the arrow a,showing the disk in position when clamped to its place. Fig. 5 is a planor face view of a clamping-sleeve used to secure the disk on thecarrier, and Fig. 6 a face view of a polishing-disk such as is used inconnection With the carrier. Fig. 7 is a detail View showing thehinge-joint.

A is the shank or body part of the carri 1 of any suitable generalconstruction for con nection with the mandrel of a dental engine, buthaving its outer end of flat form, as shown at b, and having hinged tothe outer end of such flattened portion, as at c,a head 13. This hingedconnection enables said head to be turned up or carried over to one sideof the axis of the shank, as shown in Fig. 3, or at a right angle tosaid shank, as desired, and as shown in Figs. 1, 2, and 4:.

A sleeve C is held to slide upon the shank at the rear of the head B,the said sleeve at its end contiguous to the head being preferablyprovided with a flange d, whereby its diameter is increased tocorrespond, or thereabout, to the diameter of the head 13. This sleeve Cmaybe moved in or out on the shankthat is, toward or from the head-byany suitable adjusting means. Thus it may be adj usted outward to clampthe disk G against the hinged head B when shut or turned down by a nute, fitting a screw-thread f on the shank A and acting against the rearend of said sleeve, or it maybe adjusted inward to permit of the hingedhead B being turned upward or to one side of axis or flattenedportionbof the shank by slackening the nut e and sliding the sleeve Cinward. If desired, the nut 6 might be dis pensed with or be simply usedas a jam-nut and the sleeve Cbe extended and constructed to engage withthe screw-threadfon the shank; but it is preferred to make the sleeve Ca freely-sliding one and to use the nut e in the rear of it, in whichcase I construct said sleeve with opposite side slots g to receivewithin them the flattened portion 1) of the shank, which thus will serveto guide and steady it in a straight course.

To affix the polishing-disk G to the carrier or tool when said tool isconstructed as shown, the clamping-sleeve C is adjusted inward, as shownin Figs. 2 and 3, and the hinged head B is thrown up or to one side ofthe shank A, as shown in Fig. 3. The disk G, which is con structed witha central elongated aperture h, adapted to receive the upturned head Bthrough it, is then passed down or inward over said upturned head, whichcenters the disk without any after separate adjustment of the disk andthe head B afterward turned down or to'a position at right angles, orthereabout, to the shank A and the sleeve 0 adjusted outward to clampthe disk in between it and the head B. In this way or by these means thepolishingdisk is automatically centered and may be very quickly andconveniently attached to the carrier or removed therefrom when requiredand when attached be very firmly secured in position on the carrier.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a dentaldisk-carrier, the combination, with the shank or body ofthe carrier, of a head hinged to the outer end thereof, a clamp movableupon said shank or body at the rear of the head, and means for operatingthe clamp, essentially as and for the purpose specified.

2. The combination, with the shank or body of the carrier having aflattened outer end portion, of a head hinged to said outer end portioncapable of being turned parallel with or at a right angle to said shank,a slotted sliding clamping-sleeve receiving said flattened shank portionwithin or through it, and means for locking or holding the sleeve whenadjusted outward, essentially as specified.

3. An implement of the character described, consisting in the shank A,having a threaded portion f and a fiat outer end I), the head 13,pivoted at its under side to the outer extremity of the end b, as shownat c, a slotted sleeve 0, sliding on the end I), and a nut e, working onthe threaded part f, substantially as set forth.

MATHEXV S. NICHOLS.

Vitnesses:

EDWIN L. PALMER, ARTHUR G. BILL.

